Aphids frozen out

7 February 1997

Aphids frozen out

APHICIDE granules will not be needed to protect this years sugar beet crop from virus yellows, says IACR Brooms Barn.

January saw 24 ground frosts at Brooms Barn, of which three were less than the aphid-killing -7C (19.4F). Last year there had only been 11 frosts by the same time.

Seed treated with Gaucho (imidacloprid) is unlikely to benefit from aphid and virus yellows control, adds Alan Dewar .